/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 pjoc.pub, blademainer.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package pub.pjoc.common.dao;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

/**
 * @author blademainer
 * @version 2016-08-02 14:20
 */
public abstract class BaseDao<T> {
  private static final Logger LOGGER = LoggerFactory.getLogger(BaseDao.class);
  private Class<T> entityType;

  public BaseDao() {
    Class<? extends BaseDao> clazz = getClass();
    ParameterizedType parameterizedType = (ParameterizedType) clazz.getGenericSuperclass();
    Type[] actualTypeArguments = parameterizedType.getActualTypeArguments();
    if (actualTypeArguments.length > 0) {
      entityType = (Class<T>) actualTypeArguments[0];
      LOGGER.info("Found a generic type: {} for class: {}", entityType, clazz);
    } else {
      LOGGER.warn("Could'nt found any generic type for class: {}", clazz);
    }
  }

  public Class<T> getEntityType() {
    return entityType;
  }
}
